use assert_nil instead of "assert_equal nil"

Author: hsbt

test/test_rake_application_options.rb

@@ -328,12 +328,12 @@ def test_tasks
     flags("--tasks", "-T") do |opts|
       assert_equal :tasks, opts.show_tasks
       assert_equal(//.to_s, opts.show_task_pattern.to_s)
-      assert_equal nil, opts.show_all_tasks
+      assert_nil opts.show_all_tasks
     end
     flags(["--tasks", "xyz"], ["-Txyz"]) do |opts|
       assert_equal :tasks, opts.show_tasks
       assert_equal(/xyz/.to_s, opts.show_task_pattern.to_s)
-      assert_equal nil, opts.show_all_tasks
+      assert_nil opts.show_all_tasks
     end
     flags(["--tasks", "xyz", "--comments"]) do |opts|
       assert_equal :tasks, opts.show_tasks

test/test_rake_file_creation_task.rb

@@ -21,7 +21,7 @@ def test_file_needed
     FileUtils.rm_rf fc_task.name
     assert fc_task.needed?, "file should be needed"
     FileUtils.mkdir fc_task.name
-    assert_equal nil, fc_task.prerequisites.map { |n| Task[n].timestamp }.max
+    assert_nil fc_task.prerequisites.map { |n| Task[n].timestamp }.max
     assert ! fc_task.needed?, "file should not be needed"
   end
 

test/test_rake_file_task.rb

@@ -28,7 +28,7 @@ def test_file_need
 
     open(ftask.name, "w") { |f| f.puts "HI" }
 
-    assert_equal nil, ftask.prerequisites.map { |n| Task[n].timestamp }.max
+    assert_nil ftask.prerequisites.map { |n| Task[n].timestamp }.max
     assert ! ftask.needed?, "file should not be needed"
   ensure
     File.delete(ftask.name) rescue nil

test/test_rake_package_task.rb

@@ -53,7 +53,7 @@ def test_initialize_noversion
 
     assert_equal "pkg",  pkg.package_dir
     assert_equal "pkgr", pkg.name
-    assert_equal nil,    pkg.version
+    assert_nil pkg.version
   end
 
   def test_clone

test/test_rake_task.rb

@@ -397,13 +397,13 @@ def test_comments_with_decimal_points
 
   def test_comments_do_not_set
     t = task(:t, :name, :rev)
-    assert_equal nil, t.comment
+    assert_nil t.comment
   end
 
   def test_comments_is_nil
     t = task(:t, :name, :rev)
     t.comment = nil
-    assert_equal nil, t.comment
+    assert_nil t.comment
   end
 
   def test_extended_comments

test/test_rake_task_arguments.rb

@@ -142,7 +142,7 @@ def test_extra_args_with_less_than_named_arguments
     assert_equal [:first, :second, :third], ta.names
     assert_equal "1", ta[:first]
     assert_equal "two", ta[:second]
-    assert_equal nil, ta[:third]
+    assert_nil ta[:third]
     assert_equal ["1", "two"], ta.to_a
     assert_equal [], ta.extras
   end